1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "media/cast/test/linux_output_window.h"
6
7 #include "base/logging.h"
8 #include "media/base/video_frame.h"
9 #include "third_party/libyuv/include/libyuv/convert.h"
10 #include "ui/gfx/size.h"
11
12 namespace media {
13 namespace cast {
14 namespace test {
15
LinuxOutputWindow(int x_pos,int y_pos,int width,int height,const std::string & name)16 LinuxOutputWindow::LinuxOutputWindow(int x_pos,
17 int y_pos,
18 int width,
19 int height,
20 const std::string& name) {
21 CreateWindow( x_pos, y_pos, width, height, name);
22 }
23
~LinuxOutputWindow()24 LinuxOutputWindow::~LinuxOutputWindow() {
25 if (display_ && window_) {
26 XUnmapWindow(display_, window_);
27 XDestroyWindow(display_, window_);
28 XSync(display_, false);
29 if (gc_)
30 XFreeGC(display_, gc_);
31 XCloseDisplay(display_);
32 }
33 }
34
CreateWindow(int x_pos,int y_pos,int width,int height,const std::string & name)35 void LinuxOutputWindow::CreateWindow(int x_pos,
36 int y_pos,
37 int width,
38 int height,
39 const std::string& name) {
40 display_ = XOpenDisplay(NULL);
41 if (display_ == NULL) {
42 // There's no point to continue if this happens: nothing will work anyway.
43 VLOG(1) << "Failed to connect to X server: X environment likely broken";
44 NOTREACHED();
45 }
46
47 int screen = DefaultScreen(display_);
48
49 // Try to establish a 24-bit TrueColor display.
50 // (our environment must allow this).
51 XVisualInfo visual_info;
52 if (XMatchVisualInfo(display_, screen, 24, TrueColor, &visual_info) == 0) {
53 VLOG(1) << "Failed to establish 24-bit TrueColor in X environment.";
54 NOTREACHED();
55 }
56
57 // Create suitable window attributes.
58 XSetWindowAttributes window_attributes;
59 window_attributes.colormap = XCreateColormap(
60 display_, DefaultRootWindow(display_), visual_info.visual, AllocNone);
61 window_attributes.event_mask = StructureNotifyMask | ExposureMask;
62 window_attributes.background_pixel = 0;
63 window_attributes.border_pixel = 0;
64
65 unsigned long attribute_mask = CWBackPixel | CWBorderPixel | CWColormap |
66 CWEventMask;
67
68 window_ = XCreateWindow(display_, DefaultRootWindow(display_), x_pos,
69 y_pos, width, height, 0, visual_info.depth,
70 InputOutput, visual_info.visual,
71 attribute_mask, &window_attributes);
72
73 // Set window name.
74 XStoreName(display_, window_, name.c_str());
75 XSetIconName(display_, window_, name.c_str());
76
77 // Make x report events for mask.
78 XSelectInput(display_, window_, StructureNotifyMask);
79
80 // Map the window to the display.
81 XMapWindow(display_, window_);
82
83 // Wait for map event.
84 XEvent event;
85 do {
86 XNextEvent(display_, &event);
87 } while (event.type != MapNotify || event.xmap.event != window_);
88
89 gc_ = XCreateGC(display_, window_, 0, 0);
90
91 // create shared memory image
92 image_ = XShmCreateImage(display_, CopyFromParent, 24, ZPixmap, NULL,
93 &shminfo_, width, height);
94 shminfo_.shmid = shmget(IPC_PRIVATE,
95 (image_->bytes_per_line * image_->height),
96 IPC_CREAT | 0777);
97 shminfo_.shmaddr = image_->data = (char*) shmat(shminfo_.shmid, 0, 0);
98 if (image_->data == reinterpret_cast<char*>(-1)) {
99 VLOG(1) << "XShmCreateImage failed";
100 NOTREACHED();
101 }
102 render_buffer_ = reinterpret_cast<uint8_t*>(image_->data);
103 shminfo_.readOnly = false;
104
105 // Attach image to display.
106 if (!XShmAttach(display_, &shminfo_)) {
107 VLOG(1) << "XShmAttach failed";
108 NOTREACHED();
109 }
110 XSync(display_, false);
111 }
112
RenderFrame(const scoped_refptr<media::VideoFrame> & video_frame)113 void LinuxOutputWindow::RenderFrame(
114 const scoped_refptr<media::VideoFrame>& video_frame) {
115 libyuv::I420ToARGB(video_frame->data(VideoFrame::kYPlane),
116 video_frame->stride(VideoFrame::kYPlane),
117 video_frame->data(VideoFrame::kUPlane),
118 video_frame->stride(VideoFrame::kUPlane),
119 video_frame->data(VideoFrame::kVPlane),
120 video_frame->stride(VideoFrame::kVPlane),
121 render_buffer_,
122 video_frame->coded_size().width() * 4, // Stride.
123 video_frame->coded_size().width(),
124 video_frame->coded_size().height());
125
126 // Place image in window.
127 XShmPutImage(display_, window_, gc_, image_, 0, 0, 0, 0,
128 video_frame->coded_size().width(),
129 video_frame->coded_size().height(), true);
130
131 // Very important for the image to update properly!
132 XSync(display_, false);
133 }
134
135 } // namespace test
136 } // namespace cast
137 } // namespace media